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@nimh gieten geteld @Hire Letters Patent o. 79,585, dated July' 7,1868.

IMPROVEMENT IN WATER-WHEELS. I

tlge .dgehnle referrer ytu in these ettms zitint ma making putt nf tige'sms.

TO ALL- WHOM IT MAY. OONCERN:

'Be it known that I, SETE W. MARSH, of Rochester, in the 'county of Monroe, -and State of New York, have invented a certain new and useful Improvement in Water-Wheels; and I do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawings .making part of. this speciication.

Figure 1 is a central vertical section.

Figure 2, a horizontal section.

Like letters of reference indicate corresponding parts in vboth figures.

My improvement belongs te that class where the wheelproper is enclosed or covered by avcase which directs the water upon it. v

l The invention consists in the special construction end arrangement of the chutes of the case, whereby the sides ofthe sanne are elastic, to prevent breaking, and the expansion and contraction of the chutes are regular and insuch 'proportion as is best to concentrate the water upon the buckets of the wheel.

In the drawings, A indicates the wheel proper, B the casin'g containing the chutes, and C theannular turning-gate. i i I I Y' u The wheel proper has nothing special in its construction,being provided with a. top plate, a, and buckets b b. The casing has tangential chutes lc for directing the water at the proper angle upon the wheel, these chutes being bounded by sides c d.

Thesides c form a partlcfothe case -itself, bing 'attached to or vconstituting aportion of fixed shoulders c c', of suitable extent to form thecrcular bearing for the annular gate resting outside.

The sides d form a part of the gate C, the same projecting'inward through the passages between the shoulders c c', and turning as the gate turns. t The gate is provided with ports, ff, for .the entrance of the water. When the gate is entirely closed, the

spaces gg, between these ports,`cover the passages It in thecase, and thus cut o ilthe supply,

The inner ends ofthe tangential sides ed ofthe chutes are entirely free, and rest against a rim, h,to keep .themvv in place.

Constructing the sides of the chutes in thismanner has several distinct and important advantages. Both series c d are made'elastics and of `such thicknesses to insure a very great degree of spring, and the inner ends being left free, they can 'adapt themselves to almost any position. Thus, ifdsticks or other objects pass into the chutes, as is frequently the case, the sides will spring to such degree as will usuallyallow. the impediments to pass, or, ifthey do not pass, the elasticity will prevent breakage under ordinarycircmstances; This desired result is attained both by the spring thus insured, and by the freeaction of the inner endsof the sides, which, it will be noticed, can be opened'to avery great degree to allowtheprop'er escape.

Inbrdinary chutes of water-wheels, the sides of which are rigid, much difficulty is experencedfrom clogging, and it is frequently the case that the parts become broken.

What I claim as my invention, and desire to secureby Letters Patent, is-

The partitions c, attached to the case B, and the portions d of the gates C,.i `orming the vertical sides of the chutes c, when b oth are ilexible, and free 4to yield at their inner ends, to allowthe escape of obstructions, substantially as set forth.

In witness whereof, I have hereunto signed my name, in the presence of two subscribing witnesses.

s. w. MARSH,

Witnesses:

J. Fmsun, J AMES CAMPBELL. 

